1. A boy of about ten came up on roller-skates.

2. She traded her roller-skates for Billy's portable radio.

3. On the day of the accident, my son Gary was roller-skating outside our house.

4. A fight exploded at the roller-skating rink last Friday.

5. I can wait to roller-skate.

6. I never learned how to roller-skate.

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7. Join this club, and you will like to roller-skate.

8. They roller-skate down the street.

9. Bill likes baseball and roller-skate.

10. I can't wait to roller-skate.

11. Drivers call and tell us where they are, and our dispatchers will roller-skate their food to them.

12. Persky reappeared, pushing before him a large object on squeaky roller-skate wheels.